Check the Map constructions in the codebase to make sure that they are all typed properly

[canova]

Typescript can't infer the type of the maps when it's not properly typed, and it automatically assigns Map<any, any>.

For example, it looks like the keys/values of this map is not properly typed even though the return type is specified:

profiler/src/app-logic/url-handling.ts

Line 637 in 4cb392a

const hiddenLocalTracksByPid = new Map();

We should check all of our Map constructions and type them if they are not typed properly.

┆Issue is synchronized with this Jira Task